Hot-air furnace



(No Model.) Sheets-Sheet 1.

l J. R. BARKER.

HOT AIR PURNACE.

@ jPatented Sept. 22, 1885.

n. PETERS, Phomlianegnpher. wmingm, n. c.

(No Model.) 3 Sheets--Sheet 2,.

J. R. BARKER.

. HOT AIR FURNAGE. No. 326,541. Patented'Sept. Z2, 1885.

N. PETERS. Pmwuemgnpm. wmanswn D. c.

3 Sheets--SheefJ 3.

(No Model.)

J. R. BARKER.

HOT AIB. FURNACB. No. 326,541. Patented Sept.. 22, 1885.

N. PETERS, Phnio-Lthvgnpber, nnnnnnnnn A C.

itl,

UNITED STATES lPATENT OFFICE.

JOHN R. BARKER, OF CHICAGO, ILLINOIS.

4Hor-AIR FURNACE.

SPECIFICATION forming part of Letters Patent No. 326,541, dated September 22, 1885.

Application filed November 19, 1884. (No model.)

To @ZZ whom it may concern:

. Be it known that I, J oHN R. BARKER, a citizen of the United States of America, residing at Chicago, in the county of Cook vand State of Illinois, have invented certai'n new and useful Improvements in Hot-Air Furnaces, of which the followingis aspecitcation, reference being had therein to the accompanying drawings.

My invention relates to an improved radiator or hot-air furnace.-

The object of the invention is to improve the general construction of such furnaces in order to obtain the most beneficial results; and to the accomplishment of that end the invention consists of the novel devices and combination of devices, as will be described.

Reference will be made to the accompanying drawings, in which Figure l is a vertical section of the radiator complete; Fig. 2, a detail plan View of the upper portion of the air-escape; Fig. 3, a detail of the ring forming the uppermost gas-chamber; Fig. et. a plan of a` ring completing such upper gas-chamber and dividing it from a lower chamber; Figs. 5 and 6, details showing rings forming side walls of lower chamber, upon which parts shown in Fig. lare supported; Fig. 7, a view of a dome situated within the lower gas chamber and resting upon the main dome, of which Fig. 8 is a detail View; Fig. 9a view of a ring situated between the fire-pot and main dome and adapted to admit air to the tire-space; Fig. l0, a section on line l l of Fig. 9; Fig. ll, a detail of the vapor-pan used; Fig. l2, a detail of a removable piece used to allow access to parts of the radiator; and Fig. 13, a section on lines'2 2 of Figs. 7, 8.

Like letters refer to like parts in each view.

A represents the outer casing, supported upon suitable legs,a, a sufficient distance above the ioor to admit air to its interior, and at its upper end is provided with openings b for hotair pipes.

B represents the ash-pit, and C the grate, the ash-pit being partly surrounded by a vapor-pan, D, suitably supported, and of the shape shown.

E is the iire-pot,and F the lower dome, the

u 5o walls of the fire-pot and dome being separated by ring G. This ringis provided with downwardly opening' ports c, Fig. 10, through which air is admitted to passage d, extending entirely around the ring, and communicating with the interior of the combustion-chamber through openings e, through which the air entering ports c passes to the combustionchamber, where it commingles with the gases arising from the fire-bed and is ignited.

Formed upon the upper faceA of dome F are iiues H H J, which communicate with corre- 'partition P, to the second gaschamber, Q,

w'here they are forced to pass around the tube O, situated in such chamber, before passing off through the -chimney R, which communicates with chamber Q. By this arrangement it will be seen that' the gases are sufficiently retarded to be entirely consumed before passing to the chimney and the full benefit of the heat obtained.

Formed upon ring G, hereinbefore referred to, is a-tlange, S, which projects outwardly a short distance beyond the walls of the combustion-chamber, and which is provided with a series of openings, g. By means of this arrangement the air arising from the bottom of the furnace is slightly retarded in its upward flow, and serves to draw sufficient heat from the parts to add greatly to their utility and durability. Similar flanges are formed upon the base of the lower gas-chamber, upon the outer edge of the partition forming the base of the upper gas-chamber,aud upon the upper outer edge of tube O.

In the side walls of the gas-chambers suitable openings are formed,as shown at h, Figs. 4, 5, 6, and through which access may be gained to said chambers for the purpose of cleaning, Src., such openings being in a line with door T.

The openings h, above referred to, are adapted to be closed, when access is not desired, by a piece, WV, (shown in detail in Fig. perforated tiange, and suitable ports to admit 12,) and which is adapted to be removed when air to the interior of the combustion-chamber,

it is desired to gain access. as set forth. X represents a door leading to the combus` In testimony whereof I aix my signatur 5 tion-chamber, and Y a. similar door leading in presence of two witnesses.

to the space occupied by the vapor-pan.

What I Claim is i JoHN R. BARKER. In ahot-air furnace, the combination, with Vitnesscs: the walls of fire-space E and domeF, of the M. J. GLAGETT, xo interposed ring G, such ring provided with a FRANK S. BLANCHARD. 

